Add Today planning module scaffold

internal/module/module.go

@@ -24,6 +24,7 @@ const (
 	SPCConvectiveOutlooks   ID = "spc_convective_outlooks"
 	SPCConvectiveDiscussion ID = "spc_convective_discussion"
 	OutdoorWindows          ID = "outdoor_windows"
+	TodayPlanning           ID = "today_planning"
 	TomorrowPlanning        ID = "tomorrow_planning"
 )
 
@@ -148,4 +149,5 @@ type WeatherStoryOptions struct{}
 type SPCConvectiveOutlooksOptions struct{}
 type SPCConvectiveDiscussionOptions struct{}
 type OutdoorWindowsOptions struct{}
+type TodayPlanningOptions struct{}
 type TomorrowPlanningOptions struct{}